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It was theorized that positive selection for shovel-shaped incisors over the spatulate incisors is more commonly found within cultures that used their teeth as tools due to a greater structural strength in increased shovel-shaped incisors. [2] In some instances, incisors can present a more pronounced version of this called double shovel-shaped.
Symptoms that may be associated with condylar resorption are both aesthetic and functional. These include: Occlusion; Anterior open bite; Receding chin; Loss of ramus height; Antegonial notching; Hyperplasia of the coronoid process of the mandible; Clicking or popping when opening or closing the jaw; Pain when opening or closing the jaw ...
Idiopathic osteosclerosis, also known as enostosis or dense bone island, is a condition which may be found around the roots of a tooth, usually a premolar or molar. [2] It is usually painless and found during routine radiographs as an amorphous radiopaque (light) area around a tooth.
They allow for the appraisal of shape and size of jaws and teeth. This can be valuable for the long-term evaluation of development and for the follow-up of treatment results. Depending on the type of jaw abnormality, a face bow record for transfer on to the articulator, can sometimes be appropriate for the patient.
The majority are crown and root shape variants, although the system also includes some skeletal variants of the maxilla and mandible. Most of the variants occur at different frequencies in human populations around the world. [3] Examples of dental variants listed in the ASUDAS are shovel-shaped incisors, Carabelli cusps, or hypocones.
In the generalized form, all teeth are involved. In the localized form, only a few teeth are involved. The most common teeth affected are the upper lateral incisors and third molars. Teeth affected by microdontia may also have abnormal shape, and the abnormal size may affect the whole tooth, or only a part of the tooth. [1]
Due to the strong association with denture-wearing, the lesion tends to occur more in adults than children. There is no gender predilection. [1] In people who wear dentures 24 hours a day, its incidence is around 20%. Inflammatory papillary hyperplasia almost exclusively involves the hard palate, specifically the vault of the palate.
They occur more commonly in women in the midyears and show a predilection for the molar region of the mandible. They are especially common in extraction sites. Scattered trabeculae may extend short distances into the defect or, in some instances, through it, giving the defect a fairly characteristic appearance.